{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2023-53831", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53831", "idYear": 2023, "status": "PUBLISHED", "publishedAt": "2025-12-09T01:29:46.374Z", "updatedAt": "2026-05-11T19:52:22.798Z", "importedAt": "2026-10-24T01:57:03.413Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "net: read sk->sk_family once in sk_mc_loop()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: read sk->sk_family once in sk_mc_loop()\n\nsyzbot is playing with IPV6_ADDRFORM quite a lot these days,\nand managed to hit the WARN_ON_ONCE(1) in sk_mc_loop()\n\nWe have many more similar issues to fix.\n\nWARNING: CPU: 1 PID: 1593 at net/core/sock.c:782 sk_mc_loop+0x165/0x260\nModules linked in:\nCPU: 1 PID: 1593 Comm: kworker/1:3 Not tainted 6.1.40-syzkaller #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023\nWorkqueue: events_power_efficient gc_worker\nRIP: 0010:sk_mc_loop+0x165/0x260 net/core/sock.c:782\nCode: 34 1b fd 49 81 c7 18 05 00 00 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ff e8 25 36 6d fd 4d 8b 37 eb 13 e8 db 33 1b fd <0f> 0b b3 01 eb 34 e8 d0 33 1b fd 45 31 f6 49 83 c6 38 4c 89 f0 48\nRSP: 0018:ffffc90000388530 EFLAGS: 00010246\nRAX: ffffffff846d9b55 RBX: 0000000000000011 RCX: ffff88814f884980\nRDX: 0000000000000102 RSI: ffffffff87ae5160 RDI: 0000000000000011\nRBP: ffffc90000388550 R08: 0000000000000003 R09: ffffffff846d9a65\nR10: 0000000000000002 R11: ffff88814f884980 R12: dffffc0000000000\nR13: ffff88810dbee000 R14: 0000000000000010 R15: ffff888150084000\nFS: 0000000000000000(0000) GS:ffff8881f6b00000(0000) knlGS:0000000000000000\nCS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 0000000020000180 CR3: 000000014ee5b000 CR4: 00000000003506e0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n\n[] ip6_finish_output2+0x33f/0x1ae0 net/ipv6/ip6_output.c:83\n[] __ip6_finish_output net/ipv6/ip6_output.c:200 [inline]\n[] ip6_finish_output+0x6c6/0xb10 net/ipv6/ip6_output.c:211\n[] NF_HOOK_COND include/linux/netfilter.h:298 [inline]\n[] ip6_output+0x2bc/0x3d0 net/ipv6/ip6_output.c:232\n[] dst_output include/net/dst.h:444 [inline]\n[] ip6_local_out+0x10f/0x140 net/ipv6/output_core.c:161\n[] ipvlan_process_v6_outbound drivers/net/ipvlan/ipvlan_core.c:483 [inline]\n[] ipvlan_process_outbound drivers/net/ipvlan/ipvlan_core.c:529 [inline]\n[] ipvlan_xmit_mode_l3 drivers/net/ipvlan/ipvlan_core.c:602 [inline]\n[] ipvlan_queue_xmit+0x1174/0x1be0 drivers/net/ipvlan/ipvlan_core.c:677\n[] ipvlan_start_xmit+0x49/0x100 drivers/net/ipvlan/ipvlan_main.c:229\n[] netdev_start_xmit include/linux/netdevice.h:4925 [inline]\n[] xmit_one net/core/dev.c:3644 [inline]\n[] dev_hard_start_xmit+0x320/0x980 net/core/dev.c:3660\n[] sch_direct_xmit+0x2a0/0x9c0 net/sched/sch_generic.c:342\n[] qdisc_restart net/sched/sch_generic.c:407 [inline]\n[] __qdisc_run+0xb13/0x1e70 net/sched/sch_generic.c:415\n[] qdisc_run+0xd6/0x260 include/net/pkt_sched.h:125\n[] net_tx_action+0x7ac/0x940 net/core/dev.c:5247\n[] __do_softirq+0x2bd/0x9bd kernel/softirq.c:599\n[] invoke_softirq kernel/softirq.c:430 [inline]\n[] __irq_exit_rcu+0xc8/0x170 kernel/softirq.c:683\n[] irq_exit_rcu+0x9/0x20 kernel/softirq.c:695", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "7ad6848c7e81a603605fad3f3575841aab004eea", "status": "affected", "versionType": "git", "lessThan": "7586a66b9c4f1b8a825ea1dfa3a91aad5cc7b89b" }, { "version": "7ad6848c7e81a603605fad3f3575841aab004eea", "status": "affected", "versionType": "git", "lessThan": "e918d0211ffbaf039447334c3460cafee1ce0157" }, { "version": "7ad6848c7e81a603605fad3f3575841aab004eea", "status": "affected", "versionType": "git", "lessThan": "41f10a4d78fe69d685a3172e6884297f233dcf95" }, { "version": "7ad6848c7e81a603605fad3f3575841aab004eea", "status": "affected", "versionType": "git", "lessThan": "895dc4c47171a20035cdaa8d74c1c1e97f2fc974" }, { "version": "7ad6848c7e81a603605fad3f3575841aab004eea", "status": "affected", "versionType": "git", "lessThan": "ed4e0adfa407ab65dd73b8862ebf2f308a0349d2" }, { "version": "7ad6848c7e81a603605fad3f3575841aab004eea", "status": "affected", "versionType": "git", "lessThan": "9036b6342fcdab190d6edce3dd447859c1de90fc" }, { "version": "7ad6848c7e81a603605fad3f3575841aab004eea", "status": "affected", "versionType": "git", "lessThan": "b1f5b890b89cb38a6c0bac91984d56cd69808e8c" }, { "version": "7ad6848c7e81a603605fad3f3575841aab004eea", "status": "affected", "versionType": "git", "lessThan": "a3e0fdf71bbe031de845e8e08ed7fba49f9c702c" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.33", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.33" }, { "version": "4.14.326", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.295", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.257", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.195", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.132", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "6.1.54", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.1.*" }, { "version": "6.5.4", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "6.5.*" }, { "version": "6.6", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }